1. Multiple choice questions: (* * 15 questions, 2 points for each question, * * 30 points).
1, calculation: equal to ()
a、 1 B、0 C、D、3
2. Simplification: The final result is ()
A, B, C, D,
4.820× 3000 = _ _ _ _ _ (expressed by scientific notation) is ()
A, B, C, D,
5. Decomposition coefficient: = _ _ _ _ _ _ ()
A, B, C, D,
6, when x____, it is meaningful to ()
a、≤ B、≥ C、≥ D、≤
7, the following operation is correct ()
Answer. x？ x3 = x3b . x2+x2 = x4 c .(-4x y2)2 = 8x2y 4d .(-2 x2)(-4x 3)= 8x 5
8, in the following points, the image is ().
A (2，3) B (3， 1) C (0，7) D ( 1， 1，9)
9, as shown in the figure, planting trees on the hillside, known as ∠ A = 30, AC=3 meters, then the phase.
Slope distance between two adjacent trees AB= ()
A, 6m (b) m (c) 2m (d) 2m.
10, the graph satisfying the function and is ()
1 1, the following line segments a, b and c can form a right triangle (Rt? ) Yes: ()
a、a=6，b= 10，c=8
c、a2=3、b2= 1、c=4 D、a=9、b=7、c=2
12, Xiao Li threw a coin, face up for 8 consecutive times. Can you tell me that when he tossed a coin for the ninth time, his head was up?
The probability is ()
13 and the score value is 0, then: ()
a、x = 1 B、x =– 1 C、x = 1 D、x ≠ 1
14, in the parallelogram ABCD, ∠ A: ∠ D = 2: 1, ∠ C = () A B.
a、 120 B、60 C、 130 D、65 C D
15. The left view of the geometry in the figure below is ().
Second, fill in patiently (2 points for each small question, 20 points for * * *)
16. The reciprocal of (-3) 2 is
17. The solution set of the inequality group is _ _ _ _ _ _ _ _ _ _
18. the formula y=-x2-2x-3 is transformed into the form of y=a(x+m)2+n, and Y = _ _ _ _ _ _ _ _ _ _
The opening direction of 19 and parabola y = 2 (x-3) 2+7 is _ _ _ _ _ _, and the symmetry axis is a straight line _ _ _ _ _.
20、( )-2+(-3)0=_________
2 1, in,, if, then
22. Factorization: =.
23. Assuming that the solution of equation 5x+m =-2 is x = 1, the value of m is.
24. The sum of the internal angles of a quadrilateral is equal to.
25. The quadratic function y = 2x2 in 2x2, and y increases with the increase of x..
Third, the calculation problem
26.27.(2x+5y)(2x-5y)-(2x-5y)2
28. Solve equation: 29. Solve the equation:
Four: solve the problem
30. In order to understand the eyesight status of primary and secondary school students, the relevant departments in a certain area randomly selected 300 students from primary schools, junior high schools and senior high schools in this area to conduct eyesight surveys, and drew a statistical chart as shown in the figure according to the data obtained from the survey. Please answer the following questions according to the information provided by the statistical chart:
(1) Among the 300 junior high school students surveyed, there are boys with poor eyesight, girls with poor eyesight and boys and girls with poor eyesight, accounting for% of the students surveyed in this period. It is estimated that among the 1200 junior high school students in this area, the number of people with poor eyesight is about 1000;
(2) Please draw a broken-line statistical chart of students' poor eyesight rate in three learning periods;
(3) According to the survey results, it is estimated that the poor eyesight rate of primary and secondary school students in this area will increase with the increase of grade, and the poor eyesight rate of high school students is about twice that of primary school students. (The result is accurate to 0. 1 times)
3 1, I want to use an iron railing with a total length of 20m, with one side against the wall and rectangular flower beds all around. How can I enclose it?
What is the largest area of this garden?
32. As shown in the figure, AB‖CD, E and F are given to AB and CD in M and N respectively, and MG shares MG and CD in G equally. Degree of seeking
33. As shown in the figure, in the pinhole imaging experiment, the flame AC shines on the screen through pinhole O, forming an example of elephant length handstand.
BD=2cm，OA=60cm，OB= 10cm。 Find the length of flame AC.
34. As shown in the figure, at RT δ ABC, ∠C=900, AC=, AB=, solve this right triangle.
These are all questions of senior one.